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  <div class="headertitle"><div class="title">address.c</div></div>
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<a href="address_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">/* address.c -- representation of network addresses</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment"> *</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment"> * Copyright (C) 2015-2016,2019 Olaf Bergmann &lt;bergmann@tzi.org&gt;</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment"> *</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment"> * This file is part of the CoAP library libcoap. Please see</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment"> * README for terms of use.</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment"> */</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span> </div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span><span class="preprocessor">#include &quot;coap_config.h&quot;</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span> </div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="preprocessor">#if !defined(WITH_CONTIKI) &amp;&amp; !defined(WITH_LWIP)</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="preprocessor">#ifdef HAVE_ASSERT_H</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="preprocessor">#include &lt;assert.h&gt;</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="preprocessor">#ifdef HAVE_ARPA_INET_H</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="preprocessor">#include &lt;arpa/inet.h&gt;</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span><span class="preprocessor">#ifdef HAVE_NETINET_IN_H</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span><span class="preprocessor">#include &lt;netinet/in.h&gt;</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span><span class="preprocessor">#ifdef HAVE_SYS_SOCKET_H</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span><span class="preprocessor">#include &lt;sys/socket.h&gt;</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span><span class="preprocessor">#ifdef HAVE_WS2TCPIP_H</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span><span class="preprocessor">#include &lt;ws2tcpip.h&gt;</span></div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span> </div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span><span class="preprocessor">#include &quot;<a class="code" href="address_8h.html">address.h</a>&quot;</span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span> </div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span><span class="preprocessor">#ifdef RIOT_VERSION</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span><span class="comment">/* FIXME */</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span><span class="preprocessor">#define IN_MULTICAST(Address) (0)</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span><span class="preprocessor">#endif </span><span class="comment">/* RIOT_VERSION */</span><span class="preprocessor"></span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span> </div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span><span class="keywordtype">int</span></div>
<div class="foldopen" id="foldopen00036" data-start="{" data-end="}">
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"><a class="line" href="address_8c.html#aece6d39e01149af8dea29b0b8cbde504">   36</a></span><a class="code hl_function" href="address_8c.html#aece6d39e01149af8dea29b0b8cbde504">coap_address_equals</a>(<span class="keyword">const</span> <a class="code hl_struct" href="structcoap__address__t.html">coap_address_t</a> *a, <span class="keyword">const</span> <a class="code hl_struct" href="structcoap__address__t.html">coap_address_t</a> *b) {</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span>  <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(a); <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(b);</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span> </div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span>  <span class="keywordflow">if</span> (a-&gt;<a class="code hl_variable" href="structcoap__address__t.html#a1734d28f40124b6f35b8cde9afbdf344">size</a> != b-&gt;<a class="code hl_variable" href="structcoap__address__t.html#a1734d28f40124b6f35b8cde9afbdf344">size</a> || a-&gt;<a class="code hl_variable" href="structcoap__address__t.html#accf59382315e4bd7178cbc6f32fcad27">addr</a>.<a class="code hl_variable" href="structcoap__address__t.html#a93f132bc05d9fbbda9827fae32e81326">sa</a>.sa_family != b-&gt;<a class="code hl_variable" href="structcoap__address__t.html#accf59382315e4bd7178cbc6f32fcad27">addr</a>.<a class="code hl_variable" href="structcoap__address__t.html#a93f132bc05d9fbbda9827fae32e81326">sa</a>.sa_family)</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span>    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span> </div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span>  <span class="comment">/* need to compare only relevant parts of sockaddr_in6 */</span></div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span> <span class="keywordflow">switch</span> (a-&gt;<a class="code hl_variable" href="structcoap__address__t.html#accf59382315e4bd7178cbc6f32fcad27">addr</a>.<a class="code hl_variable" href="structcoap__address__t.html#a93f132bc05d9fbbda9827fae32e81326">sa</a>.sa_family) {</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span> <span class="keywordflow">case</span> AF_INET:</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span>   <span class="keywordflow">return</span></div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span>     a-&gt;<a class="code hl_variable" href="structcoap__address__t.html#accf59382315e4bd7178cbc6f32fcad27">addr</a>.<a class="code hl_variable" href="structcoap__address__t.html#a4ff1cbb241d65e0b6f5e3b396a1e304e">sin</a>.sin_port == b-&gt;<a class="code hl_variable" href="structcoap__address__t.html#accf59382315e4bd7178cbc6f32fcad27">addr</a>.<a class="code hl_variable" href="structcoap__address__t.html#a4ff1cbb241d65e0b6f5e3b396a1e304e">sin</a>.sin_port &amp;&amp;</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span>     memcmp(&amp;a-&gt;<a class="code hl_variable" href="structcoap__address__t.html#accf59382315e4bd7178cbc6f32fcad27">addr</a>.<a class="code hl_variable" href="structcoap__address__t.html#a4ff1cbb241d65e0b6f5e3b396a1e304e">sin</a>.sin_addr, &amp;b-&gt;<a class="code hl_variable" href="structcoap__address__t.html#accf59382315e4bd7178cbc6f32fcad27">addr</a>.<a class="code hl_variable" href="structcoap__address__t.html#a4ff1cbb241d65e0b6f5e3b396a1e304e">sin</a>.sin_addr,</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span>            <span class="keyword">sizeof</span>(<span class="keyword">struct</span> in_addr)) == 0;</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span> <span class="keywordflow">case</span> AF_INET6:</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span>   <span class="keywordflow">return</span> a-&gt;<a class="code hl_variable" href="structcoap__address__t.html#accf59382315e4bd7178cbc6f32fcad27">addr</a>.<a class="code hl_variable" href="structcoap__address__t.html#a92d2fe98a38a8cdc5594692a031f488b">sin6</a>.sin6_port == b-&gt;<a class="code hl_variable" href="structcoap__address__t.html#accf59382315e4bd7178cbc6f32fcad27">addr</a>.<a class="code hl_variable" href="structcoap__address__t.html#a92d2fe98a38a8cdc5594692a031f488b">sin6</a>.sin6_port &amp;&amp;</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span>     memcmp(&amp;a-&gt;<a class="code hl_variable" href="structcoap__address__t.html#accf59382315e4bd7178cbc6f32fcad27">addr</a>.<a class="code hl_variable" href="structcoap__address__t.html#a92d2fe98a38a8cdc5594692a031f488b">sin6</a>.sin6_addr, &amp;b-&gt;<a class="code hl_variable" href="structcoap__address__t.html#accf59382315e4bd7178cbc6f32fcad27">addr</a>.<a class="code hl_variable" href="structcoap__address__t.html#a92d2fe98a38a8cdc5594692a031f488b">sin6</a>.sin6_addr,</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span>            <span class="keyword">sizeof</span>(<span class="keyword">struct</span> in6_addr)) == 0;</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span> <span class="keywordflow">default</span>: <span class="comment">/* fall through and signal error */</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span>   ;</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span> }</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span>}</div>
</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span> </div>
<div class="foldopen" id="foldopen00059" data-start="{" data-end="}">
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"><a class="line" href="address_8c.html#a5b47d6fe47a54a0798eddb9ea77005ea">   59</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="address_8c.html#a5b47d6fe47a54a0798eddb9ea77005ea">coap_is_mcast</a>(<span class="keyword">const</span> <a class="code hl_struct" href="structcoap__address__t.html">coap_address_t</a> *a) {</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span>  <span class="keywordflow">if</span> (!a)</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span>    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span> </div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span> <span class="keywordflow">switch</span> (a-&gt;<a class="code hl_variable" href="structcoap__address__t.html#accf59382315e4bd7178cbc6f32fcad27">addr</a>.<a class="code hl_variable" href="structcoap__address__t.html#a93f132bc05d9fbbda9827fae32e81326">sa</a>.sa_family) {</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span> <span class="keywordflow">case</span> AF_INET:</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span>   <span class="keywordflow">return</span> IN_MULTICAST(ntohl(a-&gt;<a class="code hl_variable" href="structcoap__address__t.html#accf59382315e4bd7178cbc6f32fcad27">addr</a>.<a class="code hl_variable" href="structcoap__address__t.html#a4ff1cbb241d65e0b6f5e3b396a1e304e">sin</a>.sin_addr.s_addr));</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span> <span class="keywordflow">case</span>  AF_INET6:</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span>   <span class="keywordflow">return</span> IN6_IS_ADDR_MULTICAST(&amp;a-&gt;<a class="code hl_variable" href="structcoap__address__t.html#accf59382315e4bd7178cbc6f32fcad27">addr</a>.<a class="code hl_variable" href="structcoap__address__t.html#a92d2fe98a38a8cdc5594692a031f488b">sin6</a>.sin6_addr);</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span> <span class="keywordflow">default</span>:  <span class="comment">/* fall through and signal error */</span></div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span>   ;</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span>  }</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span>}</div>
</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span><span class="preprocessor">#else </span><span class="comment">/* !defined(WITH_CONTIKI) &amp;&amp; !defined(WITH_LWIP) */</span><span class="preprocessor"></span></div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span> </div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span><span class="preprocessor">#ifdef __clang__</span></div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span><span class="comment">/* Make compilers happy that do not like empty modules. As this function is</span></div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span><span class="comment"> * never used, we ignore -Wunused-function at the end of compiling this file</span></div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span><span class="comment"> */</span></div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span><span class="preprocessor">#pragma GCC diagnostic ignored &quot;-Wunused-function&quot;</span></div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span><span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code hl_function" href="coap__gnutls_8c.html#a546cf1db58fbb6bac12675857bc2d744">dummy</a>(<span class="keywordtype">void</span>) {</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span>}</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span> </div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span><span class="preprocessor">#endif </span><span class="comment">/* !defined(WITH_CONTIKI) &amp;&amp; !defined(WITH_LWIP) */</span><span class="preprocessor"></span></div>
<div class="ttc" id="aaddress_8c_html_a5b47d6fe47a54a0798eddb9ea77005ea"><div class="ttname"><a href="address_8c.html#a5b47d6fe47a54a0798eddb9ea77005ea">coap_is_mcast</a></div><div class="ttdeci">int coap_is_mcast(const coap_address_t *a)</div><div class="ttdoc">Checks if given address a denotes a multicast address.</div><div class="ttdef"><b>Definition</b> <a href="address_8c_source.html#l00059">address.c:59</a></div></div>
<div class="ttc" id="aaddress_8c_html_aece6d39e01149af8dea29b0b8cbde504"><div class="ttname"><a href="address_8c.html#aece6d39e01149af8dea29b0b8cbde504">coap_address_equals</a></div><div class="ttdeci">int coap_address_equals(const coap_address_t *a, const coap_address_t *b)</div><div class="ttdoc">Compares given address objects a and b.</div><div class="ttdef"><b>Definition</b> <a href="address_8c_source.html#l00036">address.c:36</a></div></div>
<div class="ttc" id="aaddress_8h_html"><div class="ttname"><a href="address_8h.html">address.h</a></div><div class="ttdoc">Representation of network addresses.</div></div>
<div class="ttc" id="acoap__gnutls_8c_html_a546cf1db58fbb6bac12675857bc2d744"><div class="ttname"><a href="coap__gnutls_8c.html#a546cf1db58fbb6bac12675857bc2d744">dummy</a></div><div class="ttdeci">static void dummy(void)</div><div class="ttdef"><b>Definition</b> <a href="coap__gnutls_8c_source.html#l01854">coap_gnutls.c:1854</a></div></div>
<div class="ttc" id="amem_8c_html_a3d4ae9c092e117c836f52dc7d7cee574"><div class="ttname"><a href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a></div><div class="ttdeci">#define assert(...)</div><div class="ttdef"><b>Definition</b> <a href="mem_8c_source.html#l00018">mem.c:18</a></div></div>
<div class="ttc" id="astructcoap__address__t_html"><div class="ttname"><a href="structcoap__address__t.html">coap_address_t</a></div><div class="ttdoc">multi-purpose address abstraction</div><div class="ttdef"><b>Definition</b> <a href="address_8h_source.html#l00062">address.h:62</a></div></div>
<div class="ttc" id="astructcoap__address__t_html_a1734d28f40124b6f35b8cde9afbdf344"><div class="ttname"><a href="structcoap__address__t.html#a1734d28f40124b6f35b8cde9afbdf344">coap_address_t::size</a></div><div class="ttdeci">socklen_t size</div><div class="ttdoc">size of addr</div><div class="ttdef"><b>Definition</b> <a href="address_8h_source.html#l00063">address.h:63</a></div></div>
<div class="ttc" id="astructcoap__address__t_html_a4ff1cbb241d65e0b6f5e3b396a1e304e"><div class="ttname"><a href="structcoap__address__t.html#a4ff1cbb241d65e0b6f5e3b396a1e304e">coap_address_t::sin</a></div><div class="ttdeci">struct sockaddr_in sin</div><div class="ttdef"><b>Definition</b> <a href="address_8h_source.html#l00066">address.h:66</a></div></div>
<div class="ttc" id="astructcoap__address__t_html_a92d2fe98a38a8cdc5594692a031f488b"><div class="ttname"><a href="structcoap__address__t.html#a92d2fe98a38a8cdc5594692a031f488b">coap_address_t::sin6</a></div><div class="ttdeci">struct sockaddr_in6 sin6</div><div class="ttdef"><b>Definition</b> <a href="address_8h_source.html#l00067">address.h:67</a></div></div>
<div class="ttc" id="astructcoap__address__t_html_a93f132bc05d9fbbda9827fae32e81326"><div class="ttname"><a href="structcoap__address__t.html#a93f132bc05d9fbbda9827fae32e81326">coap_address_t::sa</a></div><div class="ttdeci">struct sockaddr sa</div><div class="ttdef"><b>Definition</b> <a href="address_8h_source.html#l00065">address.h:65</a></div></div>
<div class="ttc" id="astructcoap__address__t_html_accf59382315e4bd7178cbc6f32fcad27"><div class="ttname"><a href="structcoap__address__t.html#accf59382315e4bd7178cbc6f32fcad27">coap_address_t::addr</a></div><div class="ttdeci">union coap_address_t::@0 addr</div></div>
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